About GREEK SMALL LETTER UPSILON WITH PSILI AND OXIA
Greek Small Letter Upsilon With Psili And Oxia (U+1F54) is a Unicode lowercase letter from the Greek Extended block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class L (left-to-right), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ὔ or ὔ.